Matt Baker crunches through the leaves to find out about a new charter to protect woodlands, and Ellie Harrison meets Skomer's new seal pups.

Countryfile is in Hertfordshire, where Charlotte Smith meets the man who's made it his sole mission to save the barbel in the Old River Lea. Sean Fletcher is building a home fit for a Kingfisher and foraging for a wild dinner. John Craven is returning to his days as a scout and cooking up a storm on a woodland fire. And Adam Henson is discovering the estate where rewilding and farming sit side-by-side. Now in its fifth year, what effect is culling badgers actually having on rates of TB in our cattle? Tom Heap's looking at the science behind this controversial practice.